JP2024503815A - Beam management for devices in inactive mode - Google Patents

Abstract

Example embodiments of the present disclosure relate to transmit power control for beam management. The first device sends the first configuration to the second device. The first configuration indicates information regarding at least one candidate beam assigned to the second device. Alternatively or additionally, the first configuration further indicates a correspondence between the at least one candidate beam and the plurality of transmission opportunities, wherein the plurality of transmission opportunities are configured to: while the second device is in an inactive mode; allocated by the first device for transmission from the second device to the first device. The first device detects transmissions from the second device according to the first configuration on multiple transmission occasions. Through this solution, a beam management solution and efficient resource configuration for devices in inactive mode is proposed. [Selection diagram] Figure 6

Description

TECHNICAL FIELD Embodiments of the present disclosure relate generally to the field of telecommunications, and in particular to methods, devices, apparatus, and computer-readable storage media for beam management of devices in inactive mode.

Many techniques have been proposed and applied to wireless communication systems to achieve resource utilization. For example, beam-based transmission schemes can be used for directional wireless communications. More specifically, beam information (beam configuration information, measurement results, feedback, etc.) is exchanged between the network device and the terminal device to enable directional wireless communication.

Furthermore, in current wireless communication systems, power consumption of terminal devices is also an issue to be considered. In order to reduce the power consumption of a terminal device, it has been proposed that the terminal device may be placed in some power saving mode (such as an inactive mode). For terminal devices in inactive mode, it is proposed to suspend some unnecessary procedures (such as beam management procedures).

However, in some scenarios, a terminal device that is in inactive mode still needs to perform transmissions (e.g., small data transmissions (SDT)) with network devices, which may cause the terminal device that is in inactive mode to Administrative procedures will be required. Therefore, it is desirable to propose and discuss beam management solutions and efficient resource configurations for devices in inactive mode.

In general, example embodiments of the present disclosure provide a solution for beam management of devices in inactive mode. Embodiments that are not within the scope of the claims should be construed as examples useful, if any, in understanding the various embodiments of this disclosure.

In a first aspect, a first device is provided. The first device includes at least one processor and at least one memory including a computer program code, the at least one memory and the computer program code being stored in the first device using the at least one processor. the second device. The first configuration includes information regarding at least one candidate beam assigned to the second device, or a correspondence between the at least one candidate beam and the plurality of transmission opportunities, the plurality of transmission opportunities being a second a correspondence allocated by the first device for transmission from the second device to the first device while the device is in an inactive mode. The fist device is further adapted to detect transmissions from the second device according to the first configuration on the plurality of transmission occasions.

In a second aspect, a second device is provided. The second device includes at least one processor and at least one memory containing a computer program code, the at least one memory and the computer program code being transferred to the second device using the at least one processor. The device is configured to receive a first configuration from one device. The first configuration includes information regarding at least one candidate beam assigned to the second device, or a correspondence between the at least one candidate beam and the plurality of transmission opportunities, the plurality of transmission opportunities being a second a correspondence allocated by the first device for transmission from the second device to the first device while the device is in an inactive mode. The second device further selects the target transmission opportunity from the transmission opportunity according to the first configuration, in accordance with a determination that the second device is in an inactive mode and there is a transmission to be sent from the second device to the first device. be determined. The second device is also configured to perform a transmission from the second device to the first device at the targeted transmission opportunity.

In a third aspect, a method is provided. The method includes transmitting, at the first device, a first configuration to a second device, the first configuration comprising information about at least one candidate beam assigned to the second device; A correspondence between one candidate beam and multiple transmission opportunities, the multiple transmission opportunities being for transmission from a second device to a first device while the second device is in an inactive mode. at least one of the correspondences assigned by the first device. The method further includes detecting a transmission from the second device according to the first configuration on the plurality of transmission occasions.

In a fourth aspect, a method is provided. The method includes receiving, at the second device, a first configuration from the first device, the first configuration comprising information about at least one candidate beam assigned to the second device, or at least A correspondence between one candidate beam and multiple transmission opportunities, the multiple transmission opportunities being for transmission from a second device to a first device while the second device is in an inactive mode. at least one of the correspondences assigned by the first device. The method includes determining a target transmission opportunity from the transmission opportunities according to the first configuration in accordance with a determination that the second device is in an inactive mode and there is a transmission to be sent from the second device to the first device. further including. The method also includes performing a transmission from the second device to the first device at the targeted transmission opportunity.

In a fifth aspect, a first apparatus is provided. The first device comprises means for transmitting a first configuration to a second device, the first configuration comprising information about at least one candidate beam assigned to the second device, or about at least one candidate beam assigned to the second device. A correspondence between candidate beams and a plurality of transmission opportunities, the plurality of transmission opportunities being a first beam for transmission from a second device to a first device while the second device is in an inactive mode. indicates at least one of the correspondences assigned by the device. The first device further comprises means for detecting transmissions from the second device according to the first configuration on the plurality of transmission occasions.

In a sixth aspect, a second apparatus is provided. The second device comprises means for receiving a first configuration from the first device, the first configuration comprising information regarding at least one candidate beam assigned to the second device, or at least one candidate beam. A correspondence between candidate beams and a plurality of transmission opportunities, the plurality of transmission opportunities being a first beam for transmission from a second device to a first device while the second device is in an inactive mode. indicates at least one of the correspondences assigned by the device. The second device selects targeted transmission opportunities from the transmission opportunities according to the first configuration in accordance with a determination that the second device is in an inactive mode and there are transmissions to be sent from the second device to the first device. Further comprising means for determining. The second device also comprises means for performing a transmission from the second device to the first device at the targeted transmission occasion.

In a seventh aspect, a computer readable medium is provided. The computer readable medium comprises program instructions for causing an apparatus to perform a method according to at least a third aspect.

In an eighth aspect, a computer readable medium is provided. The computer readable medium comprises program instructions for causing an apparatus to perform a method according to at least a fourth aspect.

The Summary of the Invention section is not intended to identify key or essential features of the embodiments of the disclosure or to be used to limit the scope of the disclosure. I want you to understand that there is no such thing. Other features of the disclosure will be readily understood through the following description.

Some example embodiments will now be described with reference to the accompanying drawings.

1 illustrates an example communications environment in which example embodiments of the present disclosure may be implemented. 4 illustrates a signaling flow for beam management, according to some example embodiments of the present disclosure. 1 is a block diagram of an example beam configuration, according to some example embodiments of the present disclosure; FIG. FIG. 3 is a block diagram of a further example beam configuration, according to some example embodiments of the present disclosure. FIG. 3 is a block diagram of another example beam configuration, according to some example embodiments of the present disclosure. 3 illustrates a flowchart of a method performed at a first device, according to some example embodiments of the present disclosure. 5 illustrates a flowchart of a method performed at a second device, according to some other example embodiments of the present disclosure. 1 shows a simplified block diagram of an apparatus suitable for implementing example embodiments of the present disclosure; FIG. 1 illustrates a block diagram of an example computer-readable medium, according to some example embodiments of the present disclosure. FIG.

The same or similar reference numbers represent the same or similar elements throughout the drawings.

The principles of the present disclosure will now be described with reference to several exemplary embodiments. These embodiments are provided for illustrative purposes only and to assist those skilled in the art in understanding and practicing this disclosure, but do not suggest any limitations on the scope of this disclosure. I want you to understand that this is not a thing. The embodiments described herein can be implemented in a variety of ways other than those described below.

In the following description and claims, all technical and scientific terms used herein have the meaning commonly understood by one of ordinary skill in the art to which this disclosure belongs, unless otherwise defined. has the same meaning as

In this disclosure, references to "one embodiment," "embodiment," "illustrative embodiment," etc. indicate that the described embodiment may include a particular feature, structure, or characteristic, but any It is not necessary that a form include particular features, structures, or properties. Moreover, such phrases are not necessarily referring to the same embodiment. Additionally, when a particular feature, structure, or characteristic is described in connection with an embodiment, such feature, structure, or characteristic with respect to other embodiments, whether or not explicitly stated, It is considered within the knowledge of those skilled in the art to influence the

Terms such as "first" and "second" may be used herein to describe various elements, but these elements should not be limited by these terms. I hope you understand that there is no such thing. These terms are only used to distinguish one element from another. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element without departing from the scope of example embodiments. As used herein, the term "and/or" includes any and all combinations of one or more of the listed terms.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the example embodiments. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms unless the context clearly dictates otherwise. As used herein, the terms "comprises," "comprising," "has," "having," "includes," and/or "including" When used, those terms identify the presence of the described feature, element, component, etc., but also include one or more other features, elements, components, and/or components. It will be further understood that this does not exclude the existence or addition of combinations thereof.

As used in this application, the term "circuit" may refer to one or more or all of the following:
(a) hardware-only circuit implementation (e.g., implementation with only analog and/or digital circuits);
(b) a combination of hardware circuitry and software, for example (where applicable):
(i) a combination of analog and/or digital hardware circuit(s) and software/firmware;
(ii) any part of the hardware processor(s) using software (including digital signal processor(s)) that cooperate to cause a device such as a mobile phone or server to perform various functions; software, and memory(s));
(c) hardware circuit(s) that require software (e.g. firmware) for operation, and processor(s) such as microprocessor(s) or part of microprocessor(s); , software may not be present if it is not required for operation.

This definition of "circuit" applies to all uses of this term in this application, including in any claims. By way of further example, the term circuit, as used in this application, refers to just a hardware circuit or processor (or processors), or a portion of a hardware circuit or processor, and any software and software associated therewith. and/or firmware implementations. The term circuit also refers to, for example, baseband integrated circuits or processor integrated circuits of mobile devices, or similar integrated circuits of servers, cellular network devices, or other computing or networking devices, when applicable to certain claim elements. includes.

As used herein, the term "communications network" refers to New Radio (NR), Long Term Evolution (LTE), LTE Advanced (LTE-A), Wideband Code Division Multiple Access (WCDMA), High Speed Packet Access ( HSPA), Narrowband Internet of Things (NB-IoT), or any other suitable communications standard. Additionally, communication between terminal devices and network devices within a communication network may be of the first generation (1G), second generation (2G), 2.5G, 2.75G, third generation (3G), or fourth generation. (4G), 4.5G, fifth generation (5G) communication protocols, and/or any other protocols now known or hereafter developed. may be performed according to the communication protocol of Embodiments of the present disclosure may be applied to various communication systems. Given the rapid evolution of communications, there will, of course, be future communications technologies and systems that may embody the present disclosure. The scope of this disclosure should not be considered limited to only the systems described above.

As used herein, the term "network device" refers to a node within a communications network through which a terminal device accesses and receives services from the network. A network device may be a base station (BS) or an access point (AP), e.g., a NodeB (NodeB or NB), an evolved NodeB (eNodeB or eNB), a NR NB (gNB), depending on the applied nomenclature and technology. ), remote radio unit (RRU), radio header (RH), remote radio head (RRH), relay, integrated and access backhaul (IAB) node, low power node such as femto or pico, satellite network device, low earth It may refer to non-terrestrial network (NTN) or non-terrestrial network devices, such as orbital (LEO) and geostationary earth orbit (GEO) satellites, aircraft network devices, and the like.

The term "terminal device" refers to any end device that may be capable of wireless communication. By way of example and not limitation, a terminal device may be referred to as a communications device, user equipment (UE), subscriber station (SS), mobile subscriber station, mobile station (MS), or access terminal (AT). Terminal devices include image capture devices such as mobile phones, cellular phones, smartphones, voice over IP (VoIP) phones, wireless local loop phones, tablets, wearable terminal devices, personal digital assistants (PDAs), portable computers, desktop computers, and digital cameras. Terminal devices, gaming terminal devices, music storage and playback equipment, in-vehicle wireless terminal devices, wireless endpoints, mobile stations, laptop embedded equipment (LEE), laptop embedded equipment (LME), USB dongles, smart devices, wireless customer premises equipment (CPE), Internet of Things (LOT) devices, watches or other wearables, head-mounted displays (HMDs), vehicles, drones, medical devices and applications (e.g. remote surgery), industrial devices and applications (e.g. robots and/or other wireless devices operating in the context of commercial and/or automated processing chains), consumer electronics, devices operating on commercial and/or industrial wireless networks, etc. . In the following description, the terms "terminal device", "communication device", "terminal", "user equipment" and "UE" may be used interchangeably.

As used herein, "resource", "transmission resource", "resource block", "physical resource block" (PRB), "uplink (UL) resource", or "downlink (DL) resource" The term refers to, for example, resources in the time domain, resources in the frequency domain, resources in the spatial domain, resources in the code domain, resources in a combination of more than one domain, or any other resource that enables communication. may refer to any resource for performing communications between a terminal device and a network device, such as a resource for performing communication between a terminal device and a network device. In the following, time-domain resources (such as subframes) are used as examples of transmission resources to describe some example embodiments of the present disclosure. Note that the example embodiments of this disclosure are equally applicable to other resources in other domains.

As mentioned above, to reduce the power consumption of a terminal device, the device (particularly the terminal device) may be placed in some power saving mode. For example, a Radio Resource Control (RRC) inactive mode has been proposed and defined by a 3rd Generation Partnership Project (3GPP) work item. Additionally, as mentioned above, in some scenarios, terminal devices in inactive mode still need to perform transmissions to and from network devices. During Release 17 (Rel-17), another work item was performed in 3GPP for small data transmission (SDT) of terminal devices in RRC inactive mode of New Radio (NR). As a result, two possible solutions are proposed for enabling SDT of a terminal device in inactive mode, as explained below.

One possible solution is performed by using a random access channel (RACH) procedure that includes a 2-step RACH and a 4-step RACH (also referred to as RACH-based schemes). More specifically, the SDT may be sent from the terminal device in the inactive mode to the network device via message A of the 2-step RACH and message 3 of the 4-step RACH. Additionally, payload size is more flexible in Rel-17 than in Rel-16.

Another possible solution is performed by pre-configuring resources (also called a configured grant (CG)-based scheme). More specifically, when timing advance (TA) is enabled, SDT may be transmitted on preconfigured physical uplink shared channel (PUSCH) resources by reusing configured grant type 1. . In this way, the network device first preconfigures resources for the terminal device, and then when the terminal device enters RRC inactive mode and needs to perform transmissions to and from the network device, the terminal preconfigures resources for the terminal device. Data may be sent via configured resources.

In addition, several agreements have been reached as follows:
- The configuration of configured grant resources for SDTs sent by terminal devices in inactive mode may be sent by network devices via RRC release messages.
- The configuration of a configured grant resource may include a type 1 configured grant configuration.
- New TA timers must be introduced for TA maintenance specified in configured grant-based solutions. The newly introduced TA timer may be configured with the configured grant configuration in the RRC release message.
- The configured grant resource configuration is valid only in the current serving cell.
- A terminal device in inactive mode may perform SDT transmissions on configured grant resources if the following criteria are met: (1) the size of the transmitted data is less than the data amount threshold; (2) the configured grant resource is configured and valid; (3) the TA is valid.

There are also some pending issues that need to be discussed and defined. For example, whether other messages rather than RRC release messages can be used to configure configured grant resources, whether to support multiple configured grants, how to handle the newly introduced TA timer, etc.

As mentioned above, beam-based transmission schemes have been proposed and used for directional wireless communication in wireless communication systems. Traditionally, conventional beam management is performed for terminal devices in connected mode, where the terminal device can timely obtain serving beam information through a beam management procedure.

However, for terminal devices in inactive mode, beam management procedures are suspended. However, in some cases, some terminal devices move at high speeds. In this case, the previous service beam may no longer be valid. As a result, when the terminal device is in an inactive mode, the terminal device and the network device do not know which beams can be used to perform transmissions. Therefore, it is desirable to propose and discuss beam management solutions and efficient resource configurations for devices in inactive mode.

According to some example embodiments of the present disclosure, solutions for beam management and efficient resource configuration of devices in inactive mode are proposed.

In this solution, a first device (such as a network device) may send a first configuration to a second device (such as a terminal device). In particular, the first configuration may indicate information regarding at least one candidate beam assigned to the second device. Alternatively or additionally, the first configuration indication can also indicate a correspondence between the at least one candidate beam and the plurality of transmission opportunities, the plurality of transmission opportunities being the second device in an inactive mode. allocated by a first device for transmission from a second device to a first device during In the first configuration, when the second device enters the inactive mode and needs to send data to the first device, the second device derives the candidate beam(s) and sends the data with respect to it. You may send it. In this way, a beam management solution is proposed for devices in inactive mode, where the terminal device derives information about candidate beam(s) and the probability of successful transmission is increased. During this time, the second device can perform transmissions with the first device without entering connected mode.

Although the functionality described herein may be performed on a fixed and/or wireless network node in various example embodiments, in other example embodiments the functionality may be performed on a user equipment device ( (such as a cell phone or a tablet computer or a laptop computer or a desktop computer or a mobile or fixed IOT device). This user equipment device may for example be provided with corresponding functionality as described in relation to fixed and/or wireless network node(s), as appropriate. A user equipment device may be a user equipment and/or a control device, such as a chipset or processor, configured to control the user equipment when installed on the user equipment. Examples of such functions include bootstrap server functions and/or home subscriber servers, which provide user equipment with software configured to run on user equipment devices in terms of these functions/nodes. The information may be implemented in a user equipment device by providing the information to the device.

FIG. 1 depicts an example communications environment 100 in which example embodiments of the present disclosure may be implemented. In communication environment 100, a first device 110 may communicate with a second device 120 via a physical communication channel or link. Additionally, first device 110 may communicate with second device 120 via different beams to enable directional communication. In the example of FIG. 1, beams 130-1 to 130-5 are shown. For purposes of explanation, beams 130-1 through 130-5 are collectively or individually referred to as beam 130. Additionally, the coverage provided by first device 110 is referred to herein as cell 102.

In environment 100, if the first device 110 is a network device and the second device 120 is a terminal device, the link from the first device 110 to the second device 120 is called a DL, The link from device 120 to first device 110 is called the UL. In DL, the first device 110 is a TX device (or transmitter) and the second device 120 is an RX device (or receiver). In the UP, the second device 120 is a transmitting (TX) device (or transmitter) and the first device 110 is a receiving (RX) device (or receiver). As a specific example, first device 110 is a network device and second device 120 is a terminal device serviced by first device 110.

Furthermore, in the example of FIG. 1, second device 120 may move over time. As shown in FIG. 1, the second device 120 is located at time T and at different positions at time. Further, the second device 120 may be in different modes, such as a connected mode and an inactive mode. As a particular example, at time T, the second device 120 is in a connected mode, meaning that the second device 120 may send and receive signaling and data normally. At time T1, the second device 120 is in an inactive mode, which means that the second device 120 operates in a power-saving mode and some unnecessary procedures (such as beam management procedures) are interrupted. means.

Communications within network 100 may include Long Term Evolution (LTE), LTE Evolution, LTE Advanced (LTE-A), Wideband Code Division Multiple Access (WCDMA), Code Division Multiple Access (CDMA), and Global System for Mobile Communications (GSM). ) may conform to any suitable standard, including but not limited to. Further, this communication may be performed according to any generation of communication protocols now known or hereafter developed. Examples of communication protocols are 1st generation (1G), 2nd generation (2G), 2.5G, 2.75G, 3rd generation (3G), 4th generation (4G), 4.5G, 5th generation ( 5G) communication protocols.

It is to be understood that the number of first devices, second devices, beams, and cells and their connections do not imply any limitations and are for illustration only. Communication environment 100 may include any suitable first devices, second devices, beams, and cells adapted to implement embodiments of the present disclosure. Although not shown in the figures, it should be understood that one or more additional first and second devices may be placed in each cell 102. It should also be appreciated that in some examples, environment 100 may include only homogeneous network deployments or only heterogeneous network deployments.

In general, it should be understood that there is a correspondence between synchronization signal (SS)/physical broadcast channel (PBCH) blocks (SSBs) and beams. Therefore, the beam management procedure can also be implemented by SSB management according to the above-mentioned correspondence. As used herein, the terms "beam" and "SSB" are synonymous. In the following, example embodiments are described using the term "beam". It should be understood that all references to "beam" apply equally to "SSB".

Exemplary embodiments of the disclosure will be described in detail below with reference to the accompanying drawings.

Reference is now made to FIG. FIG. 2 illustrates a signaling flow 200 for beam management, according to some example embodiments of the present disclosure. For purposes of explanation, signaling flow 200 will be described with reference to FIG. Signaling flow 200 may involve first device 110 and second device 120. In the signaling flow 200, the first device 110 is a serving device (e.g., a network device) of a second device 120 (e.g., a terminal device), and the second device 120 is a device served by the first device 110. It is.

In the example of FIG. 2, the first device 110 and the second device support transmission according to a configured grant-based scheme (such as SDT from the second device 120 to the first device 110). More specifically, the first device 110 preconfigures resources (such as PUSCH) for the second device 120 and then sends a message to the second device 120 indicating allocation of the preconfigured resources. You may send it to When the second device 120 is in an inactive mode and needs to send data (such as SDT) to the first device 110, the second device 120 sends the data via preconfigured resources. good.

First device 110 may indicate the preconfigured resources in any suitable manner, including explicitly or implicitly. As a specific example, the first device 110 may send RRC signaling or other dedicated signaling message to the second device 120, the message including at least one configured grant (such as configured grant type 1). may be included.

As an example, a preconfigured resource may be a periodic resource in the time domain, which may be indicated by a configured grant type 1 periodicity (hereinafter referred to as "periodicity"), and a reference resource (in the time domain may be the offset of the resource (hereinafter expressed as "timeDomainOffset") relative to the system frame with index 0).

Upon/responsive to the configured grant type 1 of the serving cell (e.g., cell 102 shown in FIG. 1) being configured by the upper layer, the medium access control layer (MAC) entity provides the The configured UL grant may be stored as a configured UL grant, and the configured UL grant may be initialized or reinitialized to start with a symbol according to the timeDomainOffset and repeat with periodicity.

In some example embodiments, after the uplink grant is configured for configured grant type 1, the MAC entity sends the Nth (N>=0) uplink grant (also referred to as "transmission opportunity") Let us sequentially consider that the following symbols occur in the following symbols.

It should be understood that equation (1) above for determining symbols/transmission opportunities is provided for illustrative purposes. In other example embodiments, the symbols/transmission opportunities are determined in any other manner based on one or more of the resource configuration and related factor parameters provided in example embodiments of the present disclosure. good.

According to the solution of the present disclosure, in addition to the preconfigured resources of the second device 120, candidate beam(s) corresponding to the preconfigured resources are also assigned to the second device 120, as described below.

In operation, first device 110 may send a first configuration to a second device (210). The first configuration may be presented in any suitable manner, including explicitly or implicitly, as an indication, an information element, an embedded message, an embedded configuration, or the like. The first configuration may indicate information regarding candidate beam(s) assigned to second device 120. The candidate beam(s) may be used by the second device 120 while the second device is in an inactive mode.

Generally speaking, the second device 120 moves over time, but the range of movement of the second device 120 within a sustained period of time is limited. As a result, the last serving beam and its neighboring beams are relatively likely to be valid for the second device 120. With this in mind, in some example embodiments, the candidate beam(s) include the last serving beam used by the second device 120. Alternatively or additionally, the candidate beam(s) include at least one neighbor beam of the last service beam.

In this way, the candidate beam(s) used by the second device 120 in the inactive mode may be pre-assigned. Thus, when the second device 120 is in an inactive mode, both the first device 110 and the second device 120 can learn of the candidate beam(s) without normal beam management procedures.

Furthermore, the number of candidate beams (or multiple beams) needs to be set appropriately. More specifically, if the second device 120 is assigned only one beam (such as the last service beam), the probability of determining an available beam is relatively low. However, a relatively large number of candidate beam(s) means relatively low resource utilization, which is undesirable. Considering this, the number of candidate beam(s) may be determined according to the trade-off between the possibility of determining available beams and resource utilization. For example, if beam resources in the system are relatively sufficient, a relatively large number of candidate beam(s) may be assigned to second device 120.

Furthermore, if the second device 120 moves relatively fast, there is a relatively high probability that the second device 120 will move out of the range covered by the last serving beam. Considering this, alternatively or additionally, the number of candidate beam(s) may be determined according to the speed of the second device 120. For example, if second device 120 moves at a high speed, a relatively large number of candidate beam(s) may be assigned to second device 120.

In this way, the possibility of determining available beams is increased without allocating significant beam resources.

In some example embodiments, the first configuration may indicate information about the candidate beam(s) to be assigned to the second device 120 in any suitable manner, including explicitly or implicitly. For example, first device 110 may indicate the number of candidate beam(s) to second device 120. Since the last serving beam is known to both the first device 110 and the second device 120, the first device 110 and the second device 120 determine the last serving beam and the candidate beam(s). Candidate beam(s) may be determined based on the number. As a specific example, if the index of the last serving beam is #5 and the number of candidate beam(s) is 3, the first device 110 and the second device 120 assign the candidate beams to beam #4, #5 and #6 may be determined.

Alternatively or additionally, the first configuration may indicate each index of the candidate beam(s). In this manner, second device 120 may be assigned at least one candidate beam that can be used by second device 120 when second device 120 is in an inactive mode.

Alternatively or additionally, the first configuration indicates a correspondence between at least one candidate beam and multiple transmission opportunities. Multiple transmission opportunities are allocated by the first device 110 for transmissions from the second device 120 to the first device 110 while the second device 120 is in an inactive mode as described above. From the above correspondence, a relationship, mapping, correlation or association between the at least one candidate beam and the plurality of transmission opportunities can be derived. In the following, the term "correspondence" is used only for ease of explanation. It should be understood that the term "correspondence" can be replaced by any of the terms "relationship," "mapping," "correlation," "association," and the like. In this way, the correspondence may be dynamically configured by the first device 110.

In some example embodiments, the correspondence between the at least one candidate beam and the plurality of transmission opportunities indicates that different candidate beams correspond to different subsets of the plurality of transmission opportunities. Further, in some example embodiments, different candidate beams correspond to different subsets of the plurality of transmission opportunities through time division multiplexing.

Reference is now made to FIG. 3, which depicts a block diagram of an example beam configuration 300 in accordance with some example embodiments of the present disclosure. As shown in FIG. 3, the first line represents the system frame index, the second line represents the subframe index, the third line represents the transmission opportunity index, and the fourth line represents the candidate beam index. In the example of FIG. 3, ten transmission opportunities (i.e., transmission opportunities #0 to #9) and three candidate beams (i.e., candidate beams #0, #1, and #2) are assigned to the second device 120. There is. Additionally, candidate beam #0 corresponds to a first subset of transmission opportunities that includes transmission opportunities #0, #3, #6, and #9, and candidate beam #1 corresponds to a first subset of transmission opportunities that includes transmission opportunities #1, #4, and #9. Candidate beam #2 corresponds to a third subset of transmission opportunities including transmission opportunities #2, #5, and #8.

It should be understood that the numbers of system frames, subframes, transmission opportunities, and candidate beams and their correspondence shown in FIG. 3 are not meant to be limiting and are for illustrative purposes only. Additionally, while the associated resources are illustrated and described by way of example system frames and subframes, it is to be understood that the resources may be of any suitable type, such as PRBs, RBs, symbols, etc.

Additionally, although the resources are shown as periodic resources, in some other example embodiments the resources are determined by a random selection procedure or by a predefined resource pattern. It may be an aperiodic resource such as.

In this way, the correspondence between the at least one candidate beam and the plurality of transmission opportunities can be configured more flexibly. In particular, by using time division multiplexing, the overhead for indicating correspondence can be minimized. For example, once the second device 120 determines candidate beams, the second device 120 may map the candidate beams to transmission opportunities according to predefined rules. For example, the first device 110 sequentially and iteratively maps candidate beams to transmission opportunities.

As a concrete example, both candidate beams and transmission opportunities are sequentially renumbered with the original value 0, and the correspondence between candidate beams and transmission opportunities may be expressed as follows.
Candidate beam index = (N modulo the number of candidate beams) (2)
Here, the parameter N represents the index of the transmission opportunity.

Further, in some example embodiments, a first candidate beam of the plurality of candidate beams is configured with a first periodicity, and a second candidate beam of the plurality of candidate beams is configured with a different second periodicity. be done.

In some example embodiments, the periodicity of the candidate beams may be configured based on the likelihood that the candidate beams will be available to the second device 120 while the second device 120 is in an inactive mode. can. As an example, the beams previously used by the second device 120 (particularly the last serving beam) are configured with relatively short periods. Additionally, in some example embodiments, the first configuration may further indicate the periodicity of each of the candidate beams. In this way, the candidate beam(s) can be configured better.

Reference is now made to FIG. 4, which shows a block diagram of an example beam configuration 400, according to some example embodiments of the present disclosure. As shown in the example of FIG. 3, in the example of FIG. 4, the first row represents a system frame index, the second row represents a subframe index, the third row represents a transmission opportunity index, and the fourth row represents a candidate beam index. In the example of FIG. 4, ten transmission opportunities (i.e., transmission opportunities #0 to #9) and three candidate beams (i.e., candidate beams #0, #1, and #2) are assigned to the second device 120. .

In the example of FIG. 4, candidate beam #0 corresponds to the beam with the least number of services and is configured with a shorter period than the other candidate beams. As shown in FIG. 4, candidate beam #0 corresponds to a first subset of transmission opportunities including transmission opportunities #0, #2, #4, #6, and #8, and candidate beam #1 corresponds to a first subset of transmission opportunities including transmission opportunities #0, #2, #4, #6, and #8. Candidate beam #2 corresponds to a second subset of transmission opportunities that includes transmission opportunities #1, #5, and #9, and candidate beam #2 corresponds to a third subset of transmission opportunities that includes transmission opportunities #3 and #7.

It should be understood that the numbers of system frames, subframes, transmission opportunities, and candidate beams and their correspondence shown in FIG. 4 are not meant to be limiting and are for illustrative purposes only. Furthermore, the periodicity of the candidate beams is not meant to be limiting, and is for illustrative purposes only.

Alternatively or additionally, in some example embodiments, the correspondence between the at least one candidate beam and the plurality of transmission opportunities is such that at least one of the transmission opportunities corresponds to more than one candidate beam. Indicate that.

Furthermore, the number of candidate beams for each transmission opportunity is the same.

In this way, the number of candidate beams can be increased and the possibility of determining the available beams increases accordingly.

Reference is now made to FIG. 5, which illustrates a block diagram of an example beam configuration 500, according to some example embodiments of the present disclosure. Similar to the example in Figure 3, in the example in Figure 5, the first row represents the system frame index, the second row represents the subframe index, the third row represents the transmission opportunity index, and the fourth row represents the candidate beam index. represents. In the example of FIG. 5, ten transmission opportunities (i.e., transmission opportunities #0 to #9) and four candidate beams (i.e., candidate beams #0 to #4) are assigned to second device 120.

In the example of FIG. 5, each transmission opportunity is comprised of two or more (eg, two) candidate beams. As shown in FIG. 5, transmission opportunities #0, #2, #4, #6 and #8 are composed of candidate beams #0 and #1, respectively, and transmission opportunities #1, #3, #5, #8 are composed of candidate beams #0 and #1, respectively. 7 and #9 are composed of candidate beams #2 and #3, respectively.

It should be understood that the numbers of system frames, subframes, transmission opportunities, and candidate beams and their correspondence shown in FIG. 5 are not meant to be limiting and are for illustrative purposes only. Furthermore, the periodicity of the candidate beams is not meant to be limiting, and is for illustrative purposes only.

It should be understood that the above example correspondence between the at least one candidate beam and the plurality of transmission opportunities is not meant to be limiting, and is for illustrative purposes only. Correspondence may be implemented in any suitable relationship. In some other example embodiments, different transmission opportunities may be configured with different numbers of candidate beams. Furthermore, some of the candidate beams may be configured periodically and the rest may be configured non-periodically. It should also be understood that the correspondence may be expressed by any suitable parameter, such as offset, index, periodicity, etc.

After describing the correspondence between at least one candidate beam and multiple transmission opportunities, reference is again made to FIG. 2 .

In some example embodiments, the first configuration is sent via an RRC message, such as an RRC message release message. In this manner, the first device 110 may command the second device 120 to enter the inactive mode, and at the same time, the first device 110 may command the second device 120 to enter the inactive mode while the second device 120 Indicate a resource configuration (including reconfigured resources and candidate beams) for transmission to the first device 110.

Alternatively, in some other example embodiments, the first configuration is sent via system broadcast information signaling, such as system broadcast information signaling. In this manner, first device 110 may dynamically update the first configuration.

In some other example embodiments, first device 110 may send information for beam management via multiple configured grants. More specifically, in addition to transmitting the first configuration, first device 110 also transmits a second configuration to second device 120 (220). The second configuration indicates information regarding at least one additional candidate beam assigned to the second device 120. Alternatively or additionally, the second configuration further indicates a further correspondence between the at least one further candidate beam and the plurality of transmission opportunities. Furthermore, different configured grants may be sent via one message or via different messages of different types at different times. In this way, beam management procedures may be performed more flexibly by the first device 110.

After transmitting the first configuration and additional indications of a further configuration (such as a second configuration), the first device 110 detects transmissions from the second device 120 on multiple transmission occasions.

After receiving the first configuration and an additional indication of a further configuration (such as a second configuration) from the first device 110, the second device 120 determines the candidate beam(s) assigned to the second device 120. (optional) may be derived and correspondences between candidate beam(s) and multiple transmission opportunities may be determined.

If the second device 120 is in an inactive mode and the second device 120 determines that there is data that needs to be sent to the first device 110 (230), the second device 120 A target transmission opportunity is determined from the plurality of transmission opportunities configured and indicated by device 110 (240). Determination of target transmission is performed based on the first configuration.

In some example embodiments, second device 120 determines the target transmission opportunity based on the received signal strength of at least one candidate beam. Alternatively or additionally, the second device 120 determines the target transmission opportunity based on the time difference between the current time point and the transmission time point corresponding to the transmission opportunity. For example, second device 120 determines whether the received signal strength of the candidate beam can support acceptable transmission from second device 120 to first device 110. This can be performed by comparing the received signal strength of the candidate beam(s) to a preset threshold. If there is only one beam that can support acceptable transmission, second device 120 may determine the next transmission opportunity corresponding to the determined beam that supports acceptable transmission as the target transmission opportunity. If the second device 120 determines that there are two or more beams that can support acceptable transmissions, the second device 120 determines the transmission opportunity corresponding to the beam with the best received signal strength as the target transmission opportunity. You may do so. Alternatively, the second device 120 may determine the next transmission opportunity corresponding to any of the beams that support acceptable UL transmission as the target transmission opportunity. In some examples, for a subsequent UL transmission or any transmission following the first UL transmission, the second device 120 may use a transmission opportunity that corresponds to the selected beam of the first UL transmission. . Alternatively, in one example, second device 120 may use the transmission opportunity corresponding to any beam for which the received signal strength exceeds a preset threshold.

It should be understood that the above criteria for determining eligible transmission opportunities are for illustrative purposes only, without implying limitation. In some other example embodiments, any suitable other criteria may be applied to determine target transmission opportunities.

In this way, second device 120 may determine the appropriate beam to perform a transmission to first device 110 even if second device 120 is in an inactive mode.

In some example embodiments, the second device 120 performs a transmission from the second device 120 to the first device 110 at the determined target transmission opportunity (250). As described above, after transmitting the first configuration and the additional second configuration, the first device 110 detects transmissions from the second device 120 on multiple transmission occasions. Therefore, transmissions from second device 120 may be accurately detected and received by first device 110.

In this manner, reconfiguring the candidate beam(s) of the second device 120 increases the likelihood of successful UL transmission.

Additionally, as discussed above, in some cases, one transmission opportunity may be comprised of more than one candidate beam. If the second device 120 determines that the targeted transmission opportunity corresponds to more than one candidate beam, the second device 120 transmits an indication of the targeted beam to the first device 110 (260) and 1 device 110 may detect the indication of the target beam accordingly. In this way, first device 110 may be informed of the preferred beam for second device 120.

In some example embodiments, first device 110 may perform subsequent transmissions based on the target beam indicated by second device 120 (270). For example, if the first device 110 has a data transmission to the second device 120, the first device 110 may perform the data transmission using the target beam. As another example, the first device 110 may reconstruct further candidate beam(s) for the second device 120 based on the target beam, and the further reconstructed candidate beam(s). ) may be updated to the second device 120.

In this way, information regarding the best candidate beam(s) may be exchanged between the first device 110 and the second device 120 in a timely manner.

Throughout this disclosure, a beam management solution is proposed for devices in inactive mode, in which a terminal device may derive information about available beams and the likelihood of successful transmission is increased. Meanwhile, the second device 120 can perform transmissions with the first device 110 without entering connected mode.

FIG. 6 depicts a flowchart of an example method 600 implemented at first device 110, according to some example embodiments of the present disclosure. For purposes of explanation, method 600 will be described from the perspective of first device 110 with respect to FIGS. 1 and 2.

At block 610, the first device 110 sends the first configuration to the second device 120. The first configuration indicates information regarding at least one candidate beam assigned to the second device 120. Alternatively or additionally, the first configuration further indicates a correspondence between the at least one candidate beam and a plurality of transmission opportunities, wherein the plurality of transmission opportunities are transmitted while the second device 120 is in an inactive mode. is allocated by the first device 110 for transmission from the second device 120 to the first device 110 .

At block 620, the first device 110 detects transmissions from the second device 120 according to the first configuration on multiple transmission occasions.

In some example embodiments, the correspondence between the at least one candidate beam and the plurality of transmission opportunities is such that different candidate beams correspond to different subsets of the plurality of transmission opportunities, or at least one of the plurality of transmission opportunities. corresponds to more than one candidate beam.

In some example embodiments, the transmission opportunity is a periodic resource, and the first configuration further indicates the periodicity of each of the at least one candidate beam.

In some example embodiments, a first candidate beam of the plurality of candidate beams is configured with a first periodicity and a second candidate beam of the plurality of candidate beams is configured with a different second periodicity. .

In some example embodiments, an indication of the target beam determined by the second device 120 from the one or more candidate beams at a transmission opportunity corresponding to the one or more candidate beams of the plurality of transmission opportunities. A first device 110 for detecting.

In some example embodiments, the at least one candidate beam includes at least one of the last serving beam used by the second device 120, or at least one adjacent beam of the last serving beam.

In some example embodiments, the first device 110 transmits a second configuration to the second device 120 that indicates a further correspondence between the at least one additional candidate beam and the plurality of transmission opportunities.

In some example embodiments, the first configuration is sent via one of a radio resource control release message or system broadcast information signaling.

In some example embodiments, first device 110 is a network device and second device 120 is a terminal device.

FIG. 7 depicts a flowchart of an example method 700 implemented at second device 120, according to some example embodiments of the present disclosure. For purposes of explanation, method 700 will be described from the perspective of second device 120 with respect to FIGS. 1 and 2.

At block 710, second device 120 receives the first configuration from first device 110. The first configuration indicates information regarding at least one candidate beam assigned to the second device 120. Alternatively or additionally, the first configuration further indicates a correspondence between the at least one candidate beam and a plurality of transmission opportunities, wherein the plurality of transmission opportunities are transmitted while the second device 120 is in an inactive mode. is allocated by the first device 110 for transmission from the second device 120 to the first device 110 .

At block 720, the second device 120 configures the second device 120 according to the first configuration in accordance with the determination that the second device 120 is in an inactive mode and there is a transmission to be sent from the second device 120 to the first device 110. A target transmission opportunity is determined from the transmission opportunities.

At block 730, the second 120 performs a transmission from the second device 120 to the first device 110 at the targeted transmission opportunity.

In some example embodiments, the correspondence between the at least one candidate beam and the plurality of transmission opportunities is such that different candidate beams correspond to different subsets of the plurality of transmission opportunities, or at least one of the plurality of transmission opportunities. corresponds to more than one candidate beam.

In some example embodiments, the transmission opportunity is a periodic resource, and the first configuration further indicates the periodicity of each of the at least one candidate beam.

In some example embodiments, a first candidate beam of the plurality of candidate beams is configured with a first periodicity and a second candidate beam of the plurality of candidate beams is configured with a different second periodicity. .

In some example embodiments, the second device 120 is configured to perform a transmission based on at least one of the received signal strength of the at least one candidate beam or the time difference between the current time point and the transmission time point corresponding to the transmission opportunity. , determine the target transmission opportunity.

In some example embodiments, the second device 120 transmits the transmission opportunity corresponding to the candidate beam having the best received signal strength of the at least one candidate beam or from the second device 120 of the at least one candidate beam. One of the next transmission opportunities corresponding to the candidate beams that supports acceptable transmission to the first device 110 is determined as a target transmission opportunity.

In some example embodiments, second device 120 determines the target beam from more than one candidate beam in accordance with a determination that the target transmission opportunity corresponds to multiple candidate beams. Furthermore, the second device 120 sends an indication of the target beam to the first device 110.

In some example embodiments, the at least one candidate beam includes at least one of the last serving beam used by the second device 120, or at least one adjacent beam of the last serving beam.

In some example embodiments, second device 120 receives a second configuration from first device 110 that indicates a further correspondence between at least one additional candidate beam and the plurality of transmission opportunities.

In some example embodiments, the first configuration is sent via one of a radio resource control release message or system broadcast information signaling.

In some example embodiments, first device 110 is a network device and second device 120 is a terminal device.

FIG. 8 is a simplified block diagram of a device 800 suitable for implementing example embodiments of the present disclosure. Device 800 may be provided to implement a communication device, eg, the communication devices of first device 110 and second device 120 shown in FIG. As shown, device 800 includes one or more processors 810, one or more memories 820 coupled to processors 810, and one or more communication modules 840 coupled to processors 810.

Communication module 840 is for two-way communication. Communication module 840 has one or more communication interfaces to facilitate communication with one or more other modules or devices. A communication interface may represent any interface necessary for communication with other network elements. In some example embodiments, communication module 840 may include at least one antenna.

Processor 810 may be of any type suitable for the local technology network, including, by way of non-limiting example, a general purpose computer, a special purpose computer, a microprocessor, a digital signal processor (DSP), and a processor based on a multicore processor architecture. may include one or more of. Device 800 may have multiple processors, such as application-specific integrated circuit chips, temporally slaved to a clock that synchronizes a main processor.

Memory 820 may include one or more non-volatile memories and one or more volatile memories. Examples of non-volatile memory are read-only memory (ROM) 824, electrically programmable read-only memory (EPROM), flash memory, hard disk, compact disk (CD), digital video disk (DVD), optical disk, laser disk. , and other magnetic and/or optical storage devices. Examples of volatile memory include, but are not limited to, random access memory (RAM) 822 and other volatile memory that does not persist across power downs.

Computer program 830 includes computer-executable instructions that are executed by associated processor 810. Program 830 may be stored in memory, such as ROM 824. Processor 810 may perform any suitable operations and processing by loading program 830 into RAM 822 .

Example embodiments of the present disclosure may be implemented by a program 830 to enable the device 800 to perform any of the processes of the present disclosure described with reference to FIGS. 2, 6, and 7. Example embodiments of the present disclosure may also be implemented by hardware or a combination of software and hardware.

In some example embodiments, program 830 may be tangibly contained in a computer readable medium (such as memory 820) that may be included in device 800 or other storage accessible by device 800. Device 800 may load program 830 from a computer-readable medium into RAM 822 for execution. Computer readable media may include any type of tangible non-volatile storage such as ROM, EPROM, flash memory, hard disk, CD, DVD, etc. FIG. 9 shows an example of a computer readable medium 900 that may be in the form of a CD, DVD, or other optical storage disc. A program 830 is stored on the computer readable medium.

In general, various embodiments of the present disclosure may be implemented in hardware or dedicated circuitry, software, logic, or any combination thereof. Certain aspects may be implemented in hardware, while other aspects may be implemented in firmware or software that may be executed by a controller, microprocessor, or other computing device. While various aspects of embodiments of the present disclosure are illustrated and described as block diagrams, flowcharts, or some other pictorial representations, the blocks, devices, systems, techniques described herein are or understand that the methods may be implemented by, by way of non-limiting example, hardware, software, firmware, special purpose circuitry or logic, general purpose hardware or controllers or other computing devices, or any combination thereof. I want to be

The present disclosure also provides at least one computer program product tangibly stored on a non-transitory computer readable storage medium. The computer program product includes computer-executable instructions, such as those contained in program modules, that when executed on a device on a target physical or virtual processor, the computer-executable instructions, see FIGS. and perform one of the methods described above. Typically, program modules include routines, programs, libraries, objects, classes, components, data structures, etc. that perform particular tasks or implement particular abstract data types. The functionality of the program modules may be combined or divided among program modules as desired in various embodiments. Machine-executable instructions of program modules may be executed within local devices or distributed devices. In distributed devices, program modules may be located in both local and remote storage media.

Program code for implementing the methods of this disclosure may be written in any combination of one or more programming languages. These program codes may be provided to a processor or controller of a general purpose computer, special purpose computer, or other programmable data processing device such that, when executed by the processor or controller, the program codes execute the flowchart and/or Alternatively, the functions/operations specified in the block diagram are implemented. Program code may run entirely on a machine, or partially on a machine as a standalone software package, or partially on a machine and partially on a remote machine. in some cases, or entirely on a remote machine or server.

In the context of this disclosure, computer program code or related data may be conveyed by any suitable carrier to enable a device, apparatus, or processor to perform the various processes and operations described above. Examples of carriers include signals, computer readable media, and the like.

A computer readable medium may be a computer readable signal medium or a computer readable storage medium. Computer-readable media may include, but are not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. More specific examples of computer readable storage media include electrical connections having one or more wires, portable computer diskettes, hard disks, random access memory (RAM), read only memory (ROM), erasable programmable read only memory, etc. It may include memory (EPROM or flash memory), fiber optics, portable compact disk read-only memory (CD-ROM), optical storage, magnetic storage, or any suitable combination of the above.

Further, although acts are shown in a particular order, this does not mean that such acts may be performed in the particular order shown or sequentially to achieve a desired result, or that all illustrated acts may be performed in the particular order shown or sequentially. should not be understood as requiring that it be performed. Multitasking and parallel processing may be advantageous in certain situations. Similarly, although details of some specific implementations are included in the above description, these should not be construed as limitations on the scope of the disclosure, which may be specific to particular embodiments. It should be construed as a description of characteristics. Certain features that are described in the context of separate embodiments can also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment can also be implemented in multiple embodiments separately or in any suitable subcombination.

Although this disclosure has been described in language specific to structural features and/or methodological acts, the disclosure, as defined in the appended claims, is not necessarily limited to the specific features or acts described above. I hope you understand that there is no such thing. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.

Claims (44)

at least one processor;
a first device comprising: at least one memory containing computer program code;
the at least one memory and the computer program code are stored in the first device using the at least one processor;
transmitting a first configuration to a second device, the first configuration comprising:
information regarding at least one candidate beam assigned to the second device; or a correspondence between the at least one candidate beam and a plurality of transmission opportunities, wherein the plurality of transmission opportunities are assigned to the second device; assigned by the first device for transmission from the second device to the first device while the second device is in an inactive mode;
transmitting the first configuration;
detecting a transmission from the second device according to the first configuration in the plurality of transmission opportunities;
The first device causes the first device to perform. the correspondence between the at least one candidate beam and a plurality of transmission opportunities;
10. The method of claim 1, wherein different candidate beams correspond to different subsets of the plurality of transmission opportunities; or, at least one of the transmission opportunities corresponds to more than one candidate beam. 1. The first device according to 1. the transmission opportunity is a periodic resource;
the first configuration further indicating a periodicity of each of the at least one candidate beam;
A first device according to claim 1. 2. The method of claim 1, wherein a first candidate beam of the plurality of candidate beams is configured with a first periodicity, and a second candidate beam of the plurality of candidate beams is configured with a different second periodicity. The first device described. the at least one memory and the computer program code are stored in the first device using the at least one processor;
detecting an indication of a target beam determined by the second device from the one or more candidate beams at a transmission occasion corresponding to the one or more candidate beams of the plurality of transmission occasions;
A first device according to claim 1. the at least one candidate beam,
The first device of claim 1, comprising at least one of: a last serving beam used by the second device; or at least one adjacent beam of the last serving beam. the at least one memory and the computer program code are stored in the first device using the at least one processor;
The first device of claim 1, causing the second device to transmit a second configuration indicating a further correspondence between at least one further candidate beam and the plurality of transmission opportunities. . The first configuration is
radio resource control release message, or
2. The first device of claim 1, wherein the first device is transmitted via one of System Broadcast Information Signaling. A first device according to any preceding claim, wherein the first device is a network device and the second device is a terminal device. at least one processor;
a second device comprising: at least one memory containing computer program code;
the at least one memory and the computer program code to the second device using the at least one processor;
receiving a first configuration from a first device, the first configuration comprising:
information regarding at least one candidate beam assigned to the second device; or a correspondence between the at least one candidate beam and a plurality of transmission opportunities, wherein the plurality of transmission opportunities are assigned to the second device; assigned by the first device for transmission from the second device to the first device while the second device is in an inactive mode;
receiving the first configuration;
determining a target transmission opportunity from the transmission opportunities according to the first configuration, in accordance with a determination that the second device is in an inactive mode and there is a transmission to be sent from the second device to the first device; to do and
performing the transmission from the second device to the first device at the target transmission opportunity;
The second device causes the second device to perform. the correspondence between the at least one candidate beam and a plurality of transmission opportunities;
10. The method of claim 1, wherein different candidate beams correspond to different subsets of the plurality of transmission opportunities; or, at least one of the transmission opportunities corresponds to more than one candidate beam. 10. The second device according to 10. the transmission opportunity is a periodic resource;
the first configuration further indicating a periodicity of each of the at least one candidate beam;
A second device according to claim 10. 13. A first candidate beam of the plurality of candidate beams is configured with a first periodicity, and a second candidate beam of the plurality of candidate beams is configured with a different second periodicity. The second device described. the at least one memory and the computer program code using the at least one processor;
the second device further based on at least one of: a received signal strength of the at least one candidate beam; or a time difference between a current time and a transmission time corresponding to the transmission opportunity;
configured to cause determining the target transmission opportunity by determining the target transmission opportunity;
A second device according to claim 10. the at least one memory and the computer program code using the at least one processor;
The second device further includes:
a transmission opportunity corresponding to a candidate beam of the at least one candidate beam having the best received signal strength; or a candidate of the at least one candidate beam supporting acceptable transmission from the second device to the first device. determining the target transmission opportunity by determining one of the next transmission opportunities corresponding to the beam as the target transmission opportunity;
A second device according to claim 10. the at least one memory and the computer program code are transferred to the second device using the at least one processor;
determining a target beam from the more than one candidate beam according to a determination that the target transmission opportunity corresponds to more than one candidate beam;
11. The second device of claim 10, configured to: transmit an indication of the target beam to the first device. the at least one candidate beam,
11. The second device of claim 10, comprising at least one of: a last serving beam used by the second device; or at least one adjacent beam of the last serving beam. the at least one memory and the computer program code are transferred to the second device using the at least one processor;
11. Receiving from the first device a second configuration indicating a further correspondence between at least one further candidate beam and the plurality of transmission opportunities. second device. The first configuration is
radio resource control release message, or
11. The second device of claim 10, wherein the second device is transmitted via one of System Broadcast Information Signaling. A second device according to any of claims 10 to 19, wherein the first device is a network device and the second device is a terminal device. at the first device, transmitting a first configuration to a second device, the first configuration comprising:
information regarding at least one candidate beam assigned to the second device; or a correspondence between the at least one candidate beam and a plurality of transmission opportunities, wherein the plurality of transmission opportunities are assigned to the second device; the first configuration indicating at least one of the correspondences allocated by the first device for transmission from the second device to the first device while the device is in an inactive mode; to send and
detecting a transmission from the second device according to the first configuration during the plurality of transmission occasions. the correspondence between the at least one candidate beam and a plurality of transmission opportunities;
10. The method of claim 1, wherein different candidate beams correspond to different subsets of the plurality of transmission opportunities; or, at least one of the transmission opportunities corresponds to more than one candidate beam. 21. The method described in 21. the transmission opportunity is a periodic resource;
the first configuration further indicating a periodicity of each of the at least one candidate beam;
22. The method according to claim 21. 22. A first candidate beam of the plurality of candidate beams is configured with a first periodicity, and a second candidate beam of the plurality of candidate beams is configured with a different second periodicity. Method described. further comprising: detecting, at a transmission occasion corresponding to one or more candidate beams of the plurality of transmission occasions, an indication of a target beam determined by the second device from the one or more candidate beams; 22. The method according to claim 21. the at least one candidate beam,
22. The method of claim 21, comprising at least one of: a last serving beam used by the second device; or at least one adjacent beam of the last serving beam. 22. The method of claim 21, further comprising: transmitting to the second device a second configuration indicating a further correspondence between at least one additional candidate beam and the plurality of transmission opportunities. The first configuration is
22. The method of claim 21, wherein the method is sent via one of a radio resource control release message, or system broadcast information signaling. A method according to any of claims 21 to 28, wherein the first device is a network device and the second device is a terminal device. receiving, at a second device, a first configuration from the first device, the first configuration comprising:
information regarding at least one candidate beam assigned to the second device; or a correspondence between the at least one candidate beam and a plurality of transmission opportunities, wherein the plurality of transmission opportunities are assigned to the second device; the first configuration indicating at least one of the correspondences assigned by the first device for transmission from the second device to the first device while the device is in an inactive mode; receiving and
determining a target transmission opportunity from the transmission opportunities according to the first configuration, in accordance with a determination that the second device is in an inactive mode and there is a transmission to be sent from the second device to the first device; to do and
performing the transmission from the second device to the first device at the targeted transmission opportunity. the correspondence between the at least one candidate beam and a plurality of transmission opportunities;
10. The method of claim 1, wherein different candidate beams correspond to different subsets of the plurality of transmission opportunities; or, at least one of the transmission opportunities corresponds to more than one candidate beam. 30. the transmission opportunity is a periodic resource;
the first configuration further indicating a periodicity of each of the at least one candidate beam;
31. The method of claim 30. 31. A first candidate beam of the plurality of candidate beams is configured with a first periodicity, and a second candidate beam of the plurality of candidate beams is configured with a different second periodicity. Method described. determining the target transmission opportunity;
31. Determining the target transmission opportunity based on at least one of: a received signal strength of the at least one candidate beam; or a time difference between a current time and a transmission time corresponding to the transmission opportunity. the method of. determining the target transmission opportunity;
As the target transmission opportunity,
a transmission opportunity corresponding to a candidate beam of the at least one candidate beam having the best received signal strength; or a candidate of the at least one candidate beam supporting acceptable transmission from the second device to the first device. 31. The method of claim 30, comprising: determining one of the next transmission opportunities corresponding to the beam. determining a target beam from the more than one candidate beam according to a determination that the target transmission opportunity corresponds to more than one candidate beam;
31. The method of claim 30, further comprising: transmitting an indication of the target beam to the first device. the at least one candidate beam,
31. The method of claim 30, comprising at least one of: a last serving beam used by the second device; or at least one adjacent beam of the last serving beam. 31. The method of claim 30, further comprising: receiving from the first device a second configuration indicating a further correspondence between at least one additional candidate beam and the plurality of transmission opportunities. The first configuration is
radio resource control release message, or
31. The method of claim 30, wherein the method is transmitted via one of system broadcast information signaling. A method according to any of claims 30 to 39, wherein the first device is a network device and the second device is a terminal device. A first device,
Means for transmitting a first configuration to a second device, the first configuration comprising:
information regarding at least one candidate beam assigned to the second device; or a correspondence between the at least one candidate beam and a plurality of transmission opportunities, the plurality of transmission opportunities being assigned to the second device; the first configuration indicating at least one of the correspondences assigned by the first device for transmission from the second device to the first device while the device is in an inactive mode; a means for transmitting;
and means for detecting transmissions from the second device in accordance with the first configuration during the plurality of transmission occasions. A second device,
Means for receiving a first configuration from a first device, the first configuration comprising:
information regarding at least one candidate beam assigned to the second device; or a correspondence between the at least one candidate beam and a plurality of transmission opportunities, the plurality of transmission opportunities being assigned to the second device; the first configuration indicating at least one of the correspondences assigned by the first device for transmission from the second device to the first device while the device is in an inactive mode; a means for receiving;
determining a target transmission opportunity from the transmission opportunities according to the first configuration, in accordance with a determination that the second device is in an inactive mode and there is a transmission to be sent from the second device to the first device; and the means to
and means for performing the transmission from the second device to the first device at the targeted transmission occasion. A computer readable medium comprising program instructions for causing a device to perform at least a method according to any of claims 21 to 29. A computer readable medium comprising program instructions for causing a device to perform at least a method according to any of claims 30 to 40.

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